3, 2, 1 9, 8, 7, 6, 5, 4, 3, 2, 1 7, 6, 5, 4, 3, 2, 1 7, 6, 5, 4, 3, 2, 1 7, 6, 5, 4, 3, 2, 1 9, 8, 7, 6, 5, 4, 3, 2, 1
